Improvement in steam-boiler furnaces



"01H; Fox.

Steam-Boiler Furnaces. No 135,105, I Patentedlan.21,f873.

AM mara-u'mosmmlcca Mflwaongvzk macsss) v UNITED STATES CHARLES H. FOX,OF NEW ORLEANS, LOUISIANA.

IMPROVEMENT IN STEAM-BOILER FURNACES.

Specification forming part of Letters Patent No. 135,105, dated January21, 1873.

To all whom it may concern:

Be it known that I, CHARLES H. Fox, of New Orleans, in the parish ofOrleans and State of Louisiana, have invented certain new and usefulImprovements in Steam-Boiler Furnaces, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawing and the letters of reference marked thereon making a part ofthis specification, in which- Figure 1 is a longitudinal elevation of aboiler with my improvement attached. Fig. 2 is a vertical cross-sectionof the same.

This invention consists in providing boilers with a perforated deflectorwhich may be suspended by pipes, as described in the patent No. 123,882,granted to me, or may be sup ported by pillars or abutments. The objectof this invention is to prevent the retardation and cramping of thedraft of long tubular boilers, and also to allow the gases, to someextent, to pass through the openings, and thereby impart to the bricksor tiles in these openings which have attained a high degree oftemperature sufflcient heat to ignite the gases and assist in theircombustion at that point. Furthermore, the openings have the effect tobreak up the flame and smoke and scatter the gases, thereby giving thema better opportunity to mingle with the air from the furnace and producea more powerful and rapid combustion, and of course generate steam morerapidly at a much less expenditure of fuel, being more economic anddurable. These perforations may be either straight,

curved, or angular.

- The construction and operation of my invention are as follows:

A represents one or more ordinary tubular or flue boilers suspended orsupported in the usual manner, and provided at its forward end with thegrate-bars of the furnace B, and having side walls 0. I have shown theboilers in Fig. 2 with my perforated deflector D supported by thewater-pipe E, communicating at one side with the steam and at the otherside with the water-space, thereby accelerating the circulation andheating of the water. If preferred, however, the deflector may besupported by pillars or supports, as shown in dotted lines, as either ofthese two or any other convenient method may be adopted to support thedeflector. This deflector is perforated or pigeon-holed, as it iscommonly called, and as] plainly seen in Fig. 2, so that the gases andproducts of combustion may pass through and still be enough retarded toconvey or impart some of their heat to the fire-brick, of which thedeflector is composed. By this means the draft is not entirely impeded,and yet enough is stopped to allow the heat of the products ofcombustion to ignite and consume the gases, and thus assist in thegeneration of steam, and of course less fuel is used, and no smoke orgases are allowed to escape. If preferred, a deflector, a, which can bealso perforated, may be suspended or supported by pillars, as shown indotted lines, under the front end of the boiler, and immediately overthe grate-bars,

so as to retain and impart its heat to the boiler, and yet it may beprotected from direct contact with the flames, and of course bepreventedfrom burning or becoming in any manner injured by directcontact with said flames. If desired, there may be two or more of thesedeflectors, according to the length of the boiler. Under the deflector Dmay be arranged a concave arch, F, of the usual construction, to allowthe remaining products of combustion to pass freely.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is-

1. The perforated, suspended, or supported deflector D, in combinationwith a boiler, A, substantially as and for the purpose herein set forth.

- 2. The combination of the perforated deflector D, boiler A, andconcave arch F, arranged substantially as shown, and for the purposesherein set forth.

In testimony whereof I have signed myname to this specification in thepresence of two subscribing witnesses.

OHARLES H. FOX.

HENRY W. HUNT.

